Solid-solid phase change heat storage laser and manufacturing method

Abstract

The present application provides a solid-solid phase change heat storage laser and a manufacturing method. In the present application, a solid-solid phase change material is used as a temperature control module, avoiding volume and pressure changes during phase change; no gas and fluid substances are generated, resulting in less proneness to leakage; and the solid-solid phase change heat storage laser has high heat storage performance, safety and reliability.

Description

Solid-solid phase change thermal storage laser and its fabrication method Technical Field

[0001] This application relates to the field of semiconductor laser technology, specifically to a solid-solid phase change thermal storage laser and its fabrication method. Background Technology

[0002] Traditional water-cooled lasers require a circulating water system, necessitating regular replacement and maintenance of components such as the water tank. Water-cooling systems are prone to low-frequency resonance, making them difficult to achieve high dynamic resistance, and low-temperature operation of water-cooled models presents challenges. Traditional air-cooled lasers require pre-designed air ducts, hindering high integration into weapon systems. Furthermore, the fans and air ducts must be carefully protected from the adverse effects of sand and dust during weapon applications. Both fans and water-cooled systems contribute to weight, posing challenges to weight reduction design. Summary of the Invention

[0003] The purpose of this application is to provide a solid-solid phase change thermal energy storage laser that uses solid-solid phase change material as a temperature control module to avoid volume pressure changes during the phase change process, making it less prone to leakage and ensuring high safety and reliability.

[0004] In a first aspect, this application provides a solid-solid phase change thermal storage laser, comprising:

[0005] A fiber optic module, the fiber optic module including a first accommodating space and a second accommodating space disposed opposite to each other;

[0006] A pump-source thermal storage module, comprising a first pump source thermal storage module and a second pump source thermal storage module, wherein the first pump source thermal storage module is disposed in a first accommodating space of the fiber coil module, and the second pump source thermal storage module is disposed in a second accommodating space of the fiber coil module, wherein the first pump source thermal storage module and the second pump source thermal storage module are disposed opposite to each other.

[0007] A pump source is disposed on the first pump source thermal storage module and located inside the first accommodating space;

[0008] A power source thermal storage module is disposed on the side of the pump source away from the first pump source thermal storage module.

[0009] Both the pump thermal storage module and the power thermal storage module include solid-solid phase change thermal storage materials, which are solid before and after the phase change.

[0010] In some possible embodiments, both the first pump source thermal storage module and the second pump source thermal storage module include a first heat source mounting base, the phase change thermal storage material, and a first thermal storage cover plate stacked together. The first heat source mounting base of the first pump source thermal storage module is disposed close to the fiber coil module, and the second thermal storage cover plate of the second pump source thermal storage module is disposed close to the fiber coil module. The power supply thermal storage module includes a second heat source mounting base, the phase change thermal storage material, and a second thermal storage cover plate stacked together. The second heat source mounting base is disposed close to the pump thermal storage module.

[0011] The solid-solid phase change thermal storage material is composed of a thermal conduction support material, a thermal storage material, and a displacement material. The volume ratio of the thermal storage material and the displacement material is greater than 70%. The solid-solid phase change thermal storage material can undergo a solid-to-solid phase change within a temperature range of 35℃-75℃.

[0012] In some possible embodiments, the thermally conductive support material is a sponge-like solid with dense pores, the thermal conductivity of the thermally conductive support material is greater than 100 W / mK, and the melting point of the thermally conductive support material is greater than 800 °C; the thermal storage efficiency of the thermal storage material is greater than 250 J / g, the thermally conductive support material can undergo chemical covalent bond exchange with the thermal storage material to increase the melting point of the thermal storage material; the replacement material can promote the chemical reaction between the thermally conductive support material and the thermal storage material.

[0013] In some possible embodiments, the first heat source mounting base and the second heat source mounting base are each formed with an array of multiple heat dissipation cylinders and cylindrical steps on the side near the solid-solid phase change thermal storage material. The first thermal storage cover plate is fixedly connected to the first heat source mounting base through the cylindrical steps, and the second thermal storage cover plate is fixedly connected to the second heat source mounting base through the cylindrical steps.

[0014] The plurality of heat dissipation cylinders start from the central area of ​​the first heat source mounting base / second heat source mounting base and spread outwards, and the density of the plurality of heat dissipation cylinders gradually decreases from the inside to the outside.

[0015] In some possible embodiments, a plurality of high thermal conductivity metal strips are also filled between the plurality of heat dissipation cylinders, and the plurality of high thermal conductivity metal strips are inserted into the solid-solid phase change thermal storage material to support the solid-solid phase change thermal storage material.

[0016] In some possible embodiments, the space between the sidewall of the pump source and the inner wall of the fiber optic module is filled with a thermally conductive interface material.

[0017] In some possible embodiments, the thermal interface material is thermally conductive silicone grease.

[0018] In some possible embodiments, the fiber optic module includes four planar sidewalls and four arc surfaces arranged in pairs opposite each other, the four planar sidewalls and the four arc surfaces forming the first accommodating space and the second accommodating space;

[0019] The four planar sidewalls are formed with single-threaded threads to wind optical fibers. The four planar sidewalls include a first planar sidewall and a second planar sidewall that are arranged opposite to each other. The first planar sidewall and the second planar sidewall extend into the first accommodating space and the second accommodating space, respectively, to obtain two oppositely arranged first step large end faces and second step large end faces, as well as oppositely arranged first step small end faces and second step small end faces.

[0020] In some possible embodiments, the solid-solid phase change thermal energy storage laser further includes a control board support, a control board, a mode stripper, a coupler, a red light pump, and an optical fiber. The control board support is disposed on the large end face of the first step, the control board is disposed on the control board support, and the mode stripper, the coupler, the red light pump, and the optical fiber are disposed on the large end face of the second step.

[0021] The solid-solid phase change thermal energy storage laser also includes a housing, the housing includes a housing receiving space, the fiber coil module is located in the housing receiving space and is connected and fixed to the housing receiving space through the first step small end face, and the power storage module is connected and fixed to the housing receiving space through the second step small end face;

[0022] The solid-solid phase change thermal energy storage laser also includes a power supply, which is disposed above the power supply thermal energy storage module;

[0023] The solid-solid phase change thermal energy storage laser also includes a top cover, which is located above the power supply and forms a sealed space with the housing space.

[0024] Secondly, embodiments of this application provide a method for fabricating a solid-solid phase change thermal energy storage laser, the method comprising:

[0025] A fiber optic module is provided, the fiber optic module including a first accommodating space and a second accommodating space disposed opposite to each other;

[0026] Multiple thermal storage shells are provided, and injection holes are machined into the side walls of each of the multiple thermal storage shells;

[0027] The solid-solid phase change thermal storage material is heated to a preset temperature to make the solid-solid phase change thermal storage material become liquid.

[0028] Liquid solid-solid phase change thermal energy storage material is injected into the multiple thermal energy storage shells through the injection hole. After the liquid solid-solid phase change thermal energy storage material returns to solid state, the injection hole is sealed to obtain the first pump source thermal energy storage module, the second pump source thermal energy storage module, and the power supply thermal energy storage module, respectively.

[0029] The first pump source thermal storage module is placed inside the first accommodating space, and the second pump source thermal storage module is placed inside the second accommodating space;

[0030] A pump source is provided, and the pump source is located on the side of the first pump source thermal storage module away from the fiber coil module;

[0031] The power storage module is positioned on the pump source on the side away from the fiber optic module.

[0032] This application provides a solid-solid phase change thermal energy storage laser and its fabrication method. The solid-solid phase change thermal energy storage laser includes: a fiber optic module comprising a first and second accommodating space arranged opposite each other; a pump thermal energy storage module comprising a first pump source thermal energy storage module and a second pump source thermal energy storage module, wherein the first pump source thermal energy storage module is disposed in the first accommodating space of the fiber optic module, and the second pump source thermal energy storage module is disposed opposite each other; a pump source disposed on the first pump source thermal energy storage module and located inside the first accommodating space; and a power supply thermal energy storage module disposed on the side of the pump source away from the first pump source thermal energy storage module. Both the pump thermal energy storage module and the power supply thermal energy storage module include a solid-solid phase change thermal energy storage material, which remains solid before and after the phase change. The solid-solid phase change thermal energy storage laser provided by this application utilizes the solid-solid phase change material as a temperature control module, avoiding volume pressure changes during the phase change process, preventing the generation of gas and fluid substances, reducing the likelihood of leakage, and possessing high thermal energy storage performance, high safety, and high reliability. Attached Figure Description

[0033] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0034] Figure 1 is an exploded view of an embodiment of the solid-solid phase change thermal energy storage laser provided in this application.

[0035] Figure 2 is a schematic diagram of an embodiment of the first pump source thermal storage module provided in this application;

[0036] Figure 3 is a schematic diagram of the composition of the phase change thermal storage material provided in the embodiments of this application;

[0037] Figure 4 is a schematic diagram of an embodiment of the first heat source mounting base provided in the application;

[0038] Figure 5 is a top view of the first pump source thermal storage module provided in the embodiment of this application;

[0039] Figure 6 is a schematic diagram of the power supply thermal storage module and power supply provided in the embodiment of this application;

[0040] Figure 7 is a schematic diagram of an embodiment of the fiber optic module provided in this application;

[0041] Figure 8 is a schematic diagram of the external appearance of the solid-solid phase change thermal energy storage laser provided in the embodiment of this application;

[0042] Figure 9 is a schematic diagram of the structure of the heat storage shell provided in the embodiment of this application. Detailed Implementation

[0043] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0044] In the following description of this application, "some embodiments" are referred to, which describe a subset of all possible embodiments. However, it is understood that "some embodiments" may be the same subset or different subset of all possible embodiments, and may be combined with each other without conflict.

[0045] In the following description of this application, the terms "first, second, third" are used merely to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first, second, third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0047] The following detailed description is based on specific embodiments. It should be noted that the sequence numbers of the following embodiments are not intended to limit the preferred order of the embodiments.

[0048] This application provides a solid-solid phase change thermal energy storage laser, as shown in Figure 1. Figure 1 is an exploded view of an embodiment of the solid-solid phase change thermal energy storage laser provided in this application. In the embodiment shown in Figure 1, the solid-solid phase change thermal energy storage laser mainly includes the following modules:

[0049] The fiber optic module 10 includes a first accommodating space 101 and a second accommodating space 102 that are disposed opposite to each other.

[0050] The pumped thermal storage module 20 includes a first pumped thermal storage module 201 and a second pumped thermal storage module 202. The first pumped thermal storage module 201 is disposed in the first accommodating space 101 of the fiber coil module 10, and the second pumped thermal storage module 202 is disposed in the second accommodating space 102 of the fiber coil module 10. The first pumped thermal storage module 201 and the second pumped thermal storage module 202 are arranged opposite to each other.

[0051] Pump source 30 is disposed on the first pump heat storage module 201 and located inside the first accommodating space 101.

[0052] The power supply thermal storage module 40 is disposed on the side of the pump source 30 away from the first pump thermal storage module 201.

[0053] In this embodiment, both the pump thermal storage module 20 and the power thermal storage module 40 include solid-solid phase change thermal storage materials, which are solid before and after the phase change.

[0054] This application provides a solid-solid phase change thermal energy storage laser, comprising: a fiber optic coil module, including a first and second accommodating space disposed opposite to each other; a pump thermal energy storage module, including a first pump source thermal energy storage module and a second pump source thermal energy storage module, wherein the first pump source thermal energy storage module is disposed in the first accommodating space of the fiber optic coil module, and the second pump source thermal energy storage module is disposed opposite to each other; a pump source, disposed on the first pump source thermal energy storage module and located inside the first accommodating space; and a power supply thermal energy storage module, disposed on the side of the pump source away from the first pump source thermal energy storage module; both the pump thermal energy storage module and the power supply thermal energy storage module include a solid-solid phase change thermal energy storage material, which remains solid before and after the phase change. The solid-solid phase change thermal energy storage laser provided by this application utilizes a solid-solid phase change material as a temperature control module, avoiding volume pressure changes during the phase change process, preventing the generation of gas and fluid substances, minimizing leakage, and possessing high thermal energy storage performance, high safety, and high reliability.

[0055] The pump-heat storage module 20 provided in this application embodiment is mainly used to absorb the heat emitted by the pump source 30 during operation, and can also absorb the heat emitted by the fiber optic module 10 during operation. The pump-heat storage module 20 in this application includes two opposing first pump-heat storage modules 201 and second pump-heat storage modules 202, both of which have the same structure. The following is a detailed description with reference to the accompanying drawings. As shown in Figure 2, it is a schematic diagram of an embodiment of the first pump source heat storage module provided in this application embodiment. In the embodiment shown in Figure 2, the first pump-heat storage module 201 includes a first heat source mounting base 201-1, a phase change heat storage material 201-2, and a first heat storage cover plate 201-3 stacked together; wherein, the first heat source mounting base 201-1 is disposed near the top of the fiber optic module 10 and located inside the first accommodating space. The first heat storage cover plate in the second heat storage module 202 is located near the bottom of the fiber coil module 10. That is, although the structure of the first pump source heat storage module 201 is the same as that of the second pump source heat storage module 202, their positions in the laser are completely opposite, and they are arranged opposite each other. At the same time, in this embodiment, the structure of the power supply heat storage module 40 is also similar to that of the first pump source heat storage module 201, which also includes a second heat source mounting base, a phase change heat storage material and a second heat storage cover plate stacked together; the second heat source mounting base is located above the pump heat storage module 20, that is, the second heat source mounting base is located close to the pump heat storage module 20 and the second heat storage cover plate is located away from the pump heat storage module.

[0056] In the embodiments of this application, the solid-solid phase change thermal storage material is mainly composed of three components: thermal conductivity support material A, thermal storage material B, and displacement material C. Figure 3 shows a schematic diagram of the composition of the phase change thermal storage material provided in this embodiment. In Figure 3, the thermal conductivity support material is a sponge-like solid with dense pores, while thermal storage material B and displacement material C fill the pores inside the thermal conductivity support material A. The thermal conductivity support material A also serves as a support, preventing the thermal storage material B and displacement material C from moving and affecting the thermal storage effect. The thermal conductivity support material A in this application has a thermal conductivity greater than 100 watts / meter Kelvin (W / mk) and a melting point greater than 800°C. Thermal storage material B is the main thermal storage component in a solid state at room temperature, with a thermal storage efficiency greater than 250 joules / gram (J / g). The thermal conductivity support material A also has the ability to covalently exchange some chemical bonds with the thermal storage material, which significantly increases the melting point of the mixed thermal storage material, resulting in better heat absorption while ensuring that the thermal storage material remains solid. The substitution material in this application can promote a chemical reaction between the heat conduction support material and the heat storage material at a certain critical temperature point. Specifically, during laser operation, the temperature continuously rises, and the heat conduction support material and the heat storage material in the solid-solid phase change heat storage material continuously absorb heat to cool the laser. When a certain critical temperature point is reached, the substitution material in the solid-solid phase change heat storage material promotes a chemical reaction between the heat conduction support material and the heat storage material, thereby improving their heat absorption effect. It should be noted that the three components in the solid-solid phase change heat storage material of this application remain solid before and after heat absorption. Through the combination of these three materials, the solid-solid phase change heat storage material can undergo a solid-to-solid phase change within a temperature range of 35℃-75℃; it remains solid after absorbing heat. Therefore, the solid-solid phase change heat storage material provided in this application is suitable for low-power solid-solid phase change heat storage lasers, and can achieve stable heat absorption in a solid state for laser heat sources with temperatures controlled between 50℃-90℃, without producing liquid or gas; compared with traditional solid-liquid and liquid-gas phase change materials, it has higher reliability. In this application, the volume ratio of thermal storage material B and replacement material C reaches more than 70%.

[0057] Figure 4 shows a schematic diagram of an embodiment of the first heat source mounting base provided in this application. In the embodiment shown in Figure 4, multiple heat dissipation cylinders 201-1-1 and cylindrical steps 201-1-2 are formed in an array on the side of the first heat source mounting base 201-1 near the solid-solid phase change thermal storage material. The first heat source mounting base 201-1 includes a side plane that directly contacts the fiber optic module 10, and a side wall perpendicular to the aforementioned plane; multiple heat dissipation cylinders 201-1-1 and multiple cylindrical steps 201-1-2 are formed on the side plane of the first heat source mounting base 201-1. The cylindrical steps are threaded, and the first thermal storage cover plate 201-3 is formed with corresponding threaded holes. The first thermal storage cover plate 201-3 can be installed on the first thermal storage mounting base 201-1 through the corresponding threads and threaded holes. At the same time, the two can be welded together along the outer edges of the first thermal storage cover plate 201-3 and the first thermal source mounting base 201-1 to avoid displacement of the solid-solid phase change thermal storage material between the two, which would affect the thermal storage function.

[0058] In the above embodiments, multiple heat dissipation cylinders can be evenly distributed on the plane of the first heat source mounting base 201-1; alternatively, they can spread outwards from the central area of ​​the first heat source mounting base 201-1, with the density of the multiple heat dissipation cylinders gradually decreasing from the inside to the outside. This is because in actual solid-solid phase change thermal energy storage lasers, the degree of heat generation at different locations is not the same, so the density of the heat dissipation cylinders can be set according to actual needs for better heat storage. As for the cylindrical steps connecting the first heat source mounting base 201-1 and the first thermal energy storage cover plate 201-3, they can be set at the edge of the first heat source mounting base 201-1 or at the center of the first heat source mounting base 201-1; the specific number and position of the cylindrical steps can be set according to actual needs and are not limited in this application.

[0059] In the embodiments of this application, multiple high thermal conductivity metal strips can be further filled between the multiple heat dissipation cylinders. These high thermal conductivity metal strips can be inserted into the solid-solid phase change thermal storage material to support it. Simultaneously, due to the high thermal conductivity of the metal strips, heat can be better transferred to the solid-solid phase change thermal storage material for better heat storage. To achieve the supporting and heat conduction effects of the high thermal conductivity metal strips, the high thermal conductivity metal strips in this application typically need to be made of metals with high hardness, such as copper or aluminum; however, this application does not impose any limitations on their selection.

[0060] In other embodiments, in addition to the aforementioned plurality of heat dissipation cylinders, the first heat source mounting base 201-1 may also be provided with an array of polyhedra as units and an array of rhombic prisms as units; the plurality of heat dissipation cylinders, the plurality of polyhedra, and the plurality of rhombic prisms may be arranged at intervals, or they may form cylindrical units, polyhedral units, and rhombic prism units, with the unit as the smallest structure on the first heat source mounting base 201-1. The polyhedra and rhombic prisms in this application have the same function as the heat dissipation cylinders, all serving the purpose of heat dissipation. However, the positions of the aforementioned heat dissipation cylinders, polyhedra, and rhombic prisms usually need to avoid the cylindrical steps.

[0061] It should be noted that the first pump source thermal storage module 201 and the second pump source thermal storage module 202 in this application have the same structure. Therefore, the structure of the second pump source thermal storage module can be referred to the foregoing content and will not be repeated here. In addition, in this embodiment, for the first pump source thermal storage module 201, reinforcing ribs can be provided above the first thermal storage cover plate 201-3 to better support the pump source. Figure 5 shows a top view of the first pump source thermal storage module provided in this embodiment. In Figure 5, based on the structure shown in Figure 2, a grid-shaped reinforcing rib is also provided above the first pump source thermal storage module 201.

[0062] For the power source thermal storage module, its structure is similar to that of the first pump source thermal storage module 201, also including a second heat source mounting base, phase change thermal storage material, and a second thermal storage cover plate stacked together. The second heat source mounting base is positioned close to the pump source thermal storage module. The solid-solid phase change thermal storage laser provided in this application also includes a power supply 50, which is positioned above the power source thermal storage module; the second thermal storage cover plate does not have additional reinforcing ribs, but is instead perforated to install the power supply 50. Figure 6 shows a schematic diagram of the structure of the power source thermal storage module and the power supply provided in the embodiment of this application. In Figure 6, the power supply 50 includes multiple sub-power supplies arranged in an array, which are positioned above the second thermal storage cover plate.

[0063] Figure 7 shows a schematic diagram of an embodiment of the fiber optic coil module provided in this application. In the embodiment shown in Figure 7, the fiber optic coil module includes four planar sidewalls and four arcuate surfaces arranged in pairs opposite each other, forming a first accommodating space and a second accommodating space. Simultaneously, single-threaded threads are formed on the four planar sidewalls as winding grooves for the fiber optic coil to wind the optical fiber. When the pump source is installed in the first accommodating space, a thermally conductive interface material can be filled between the sidewall of the pump source and the inner wall of the fiber optic coil module 10 to further absorb heat. In some embodiments, the thermally conductive interface material can be thermally conductive silicone grease.

[0064] Please refer to Figure 7. The four planar sidewalls of the fiber optic module include two longer sidewalls and two shorter sidewalls. The two longer sidewalls, which are arranged opposite each other, are the first planar sidewall and the second planar sidewall. The first planar sidewall and the second planar sidewall extend into the first accommodating space and the second accommodating space, respectively, to obtain two oppositely arranged first step large end faces 103 and second step large end faces 104, as well as first step small end faces 105 and second step small end faces 106. Please refer to Figure 1. The solid-solid phase change thermal energy storage laser provided in this application also includes functional modules such as a control board support 60, a control board, a mode stripper, a coupler, a red light pump, and optical fibers. The control board support 60 is disposed on the first step large end face 103, and the control board is disposed on the control board support; while the functional modules such as the mode stripper, coupler, red light pump, and optical fibers are disposed on the second step large end face 104.

[0065] In the embodiment shown in Figure 1, the solid-solid phase change thermal energy storage laser also includes a housing 70, which consists of a base frame and five end face plates to form a housing space. Through holes for light emission and power transmission can be machined on the five end face plates, and the laser's output optical cable and cable head can be placed on one of the end face plates. The fiber coil module 10 is located inside the housing space and is connected and fixed to the bottom of the housing space via a first stepped small end face 105. The power supply thermal energy storage module is connected and fixed to the housing space via a second stepped small end face 106. The solid-solid phase change thermal energy storage laser also includes a top cover 80, which is located above the power supply and forms a sealed space with the housing space, ultimately forming a complete solid-solid phase change thermal energy storage laser. Figure 8 shows a schematic diagram of the external appearance of the solid-solid phase change thermal energy storage laser provided in this embodiment.

[0066] This application also provides a method for fabricating a solid-solid phase change thermal energy storage laser, mainly including:

[0067] A fiber coil module is provided, which includes a first accommodating space and a second accommodating space arranged opposite to each other; multiple heat storage shells are provided, and injection holes are machined on the side walls of the multiple heat storage shells respectively; the solid-solid phase change heat storage material is heated to a preset temperature to make the solid-solid phase change heat storage material become liquid.

[0068] Liquid solid-solid phase change thermal energy storage material is injected into multiple thermal energy storage shells through injection holes. After the liquid solid-solid phase change thermal energy storage material returns to solid state, the injection holes are sealed to obtain the first pump source thermal energy storage module, the second pump source thermal energy storage module, and the power supply thermal energy storage module, respectively.

[0069] The first pump source thermal storage module is placed inside the first accommodating space, and the second pump source thermal storage module is placed inside the second accommodating space; a pump source is provided and placed on the side of the first pump source thermal storage module away from the fiber optic coil module; the power supply thermal storage module is placed on the side of the pump source away from the fiber optic coil module.

[0070] Figure 9 shows a schematic diagram of the thermal storage shell provided in this embodiment. In Figure 9, the solid-solid phase change thermal storage material can be heated to above 200°C, causing the solid phase change thermal storage material to become liquid. This liquid phase change thermal storage material is then injected into the thermal storage shell through a filling tool connected to the filling hole on the shell. After standing for 30 minutes to 2 hours, the liquid solid-solid phase change thermal storage material returns to a solid state. At this point, the filling hole can be sealed using a soft soldering process, thus obtaining the first pump source thermal storage module, the second pump source thermal storage module, and the power supply thermal storage module. The solid-solid phase change thermal storage laser provided in this application is suitable for medium- and low-power lasers. It does not require a duct or external circulating cooling system, and the phase change material can remain solid throughout, preventing leakage due to overpressure in the containment cavity caused by liquid-gas phase changes. It features high thermal storage efficiency, high safety, and high reliability.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A solid-solid phase change thermal energy storage laser, characterized in that, include: A fiber optic module, the fiber optic module including a first accommodating space and a second accommodating space disposed opposite to each other; A pump-source thermal storage module, comprising a first pump source thermal storage module and a second pump source thermal storage module, wherein the first pump source thermal storage module is disposed in a first accommodating space of the fiber coil module, and the second pump source thermal storage module is disposed in a second accommodating space of the fiber coil module, wherein the first pump source thermal storage module and the second pump source thermal storage module are disposed opposite to each other. A pump source is disposed on the first pump source thermal storage module and located inside the first accommodating space; A power source thermal storage module is disposed on the side of the pump source away from the first pump source thermal storage module. Both the pump thermal storage module and the power thermal storage module include solid-solid phase change thermal storage materials, which are solid before and after the phase change.

2. The solid-solid phase change thermal energy storage laser according to claim 1, characterized in that, Both the first pump source thermal storage module and the second pump source thermal storage module include a first heat source mounting base, the phase change thermal storage material, and a first thermal storage cover plate stacked together. The first heat source mounting base of the first pump source thermal storage module is located close to the fiber coil module, and the second thermal storage cover plate of the second pump source thermal storage module is located close to the fiber coil module. The power supply thermal storage module includes a second heat source mounting base, the phase change thermal storage material, and a second thermal storage cover plate stacked together. The second heat source mounting base is located close to the pump thermal storage module. The solid-solid phase change thermal storage material is composed of a thermal conduction support material, a thermal storage material, and a displacement material. The volume ratio of the thermal storage material and the displacement material is greater than 70%. The solid-solid phase change thermal storage material can undergo a solid-to-solid phase change within a temperature range of 35℃-75℃.

3. The solid-solid phase change thermal energy storage laser according to claim 2, characterized in that, The thermal conductivity support material is a sponge-like solid with dense pores, has a thermal conductivity greater than 100 W / mK, and a melting point greater than 800 °C. The thermal storage material has a thermal storage efficiency greater than 250 J / g. The thermal conductivity support material can undergo chemical covalent bond exchange with the thermal storage material to increase the melting point of the thermal storage material. The replacement material can promote the chemical reaction between the thermal conductivity support material and the thermal storage material.

4. The solid-solid phase change thermal energy storage laser according to claim 2, characterized in that, The first heat source mounting base and the second heat source mounting base both have multiple heat dissipation cylinders and cylindrical steps arranged in an array on the side near the solid-solid phase change heat storage material. The first heat storage cover plate is fixedly connected to the first heat source mounting base through the cylindrical steps, and the second heat storage cover plate is fixedly connected to the second heat source mounting base through the cylindrical steps. The plurality of heat dissipation cylinders start from the central area of ​​the first heat source mounting base / second heat source mounting base and spread outwards, and the density of the plurality of heat dissipation cylinders gradually decreases from the inside to the outside.

5. The solid-solid phase change thermal energy storage laser according to claim 2, characterized in that, Multiple high thermal conductivity metal strips are also filled between the plurality of heat dissipation cylinders, and the plurality of high thermal conductivity metal strips are inserted into the solid-solid phase change material to support the solid-solid phase change material.

6. The solid-solid phase change thermal energy storage laser according to claim 1, characterized in that, The space between the sidewall of the pump source and the inner wall of the fiber optic module is filled with a thermally conductive interface material.

7. The solid-solid phase change thermal energy storage laser according to claim 1, characterized in that, The thermal interface material is thermally conductive silicone grease.

8. The solid-solid phase change thermal energy storage laser according to claim 1, characterized in that, The fiber coil module includes four planar sidewalls and four arc surfaces arranged in pairs opposite to each other, and the four planar sidewalls and the four arc surfaces enclose the first accommodating space and the second accommodating space; The four planar sidewalls are formed with single-threaded threads to wind optical fibers. The four planar sidewalls include a first planar sidewall and a second planar sidewall that are arranged opposite to each other. The first planar sidewall and the second planar sidewall extend into the first accommodating space and the second accommodating space, respectively, to obtain two oppositely arranged first step large end faces and second step large end faces, as well as oppositely arranged first step small end faces and second step small end faces.

9. The solid-solid phase change thermal energy storage laser according to claim 8, characterized in that, The solid-solid phase change thermal energy storage laser also includes a control board bracket, a control board, a mode stripper, a coupler, a red light pump, and an optical fiber. The control board bracket is disposed on the large end face of the first step, and the control board is disposed on the control board bracket. The mode stripper, the coupler, the red light pump, and the optical fiber are disposed on the large end face of the second step. The solid-solid phase change thermal energy storage laser also includes a housing, the housing includes a housing receiving space, the fiber coil module is located in the housing receiving space and is connected and fixed to the housing receiving space through the first step small end face, and the power storage module is connected and fixed to the housing receiving space through the second step small end face; The solid-solid phase change thermal energy storage laser also includes a power supply, which is disposed above the power supply thermal energy storage module; The solid-solid phase change thermal energy storage laser also includes a top cover, which is located above the power supply and forms a sealed space with the housing space.

10. A method for fabricating a solid-solid phase change thermal energy storage laser, characterized in that, The method includes: A fiber optic module is provided, the fiber optic module including a first accommodating space and a second accommodating space disposed opposite to each other; Multiple thermal storage shells are provided, and injection holes are machined into the side walls of each of the multiple thermal storage shells; The solid-solid phase change thermal storage material is heated to a preset temperature to make the solid-solid phase change thermal storage material become liquid. Liquid solid-solid phase change thermal energy storage material is injected into the multiple thermal energy storage shells through the injection hole. After the liquid solid-solid phase change thermal energy storage material returns to solid state, the injection hole is sealed to obtain the first pump source thermal energy storage module, the second pump source thermal energy storage module, and the power supply thermal energy storage module, respectively. The first pump source thermal storage module is placed inside the first accommodating space, and the second pump source thermal storage module is placed inside the second accommodating space; A pump source is provided, and the pump source is located on the side of the first pump source thermal storage module away from the fiber coil module; The power storage module is positioned on the pump source on the side away from the fiber optic module.

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